BODY_NOT_A_STRING_FROM_FUNCTION

The BODY_NOT_A_STRING_FROM_FUNCTION error occurs when a function returns a body that is not a string. It's essential that functions return a string body to ensure that they can be correctly processed and executed.

To troubleshoot this error, follow these steps:

1. Check function return type: Ensure that the function is structured to return a string. If the function is returning a different data type, modify the function to return a string, using JSON.stringify() if necessary
2. Review function code: Inspect the function code for any logic that might cause a non-string value to be returned
3. Check data types: If the function is processing input data or retrieving data from external sources, ensure that the data is being correctly converted to a string before being returned
4. Review function logs: Check the function logs for any errors or warnings that might indicate why a non-string value is being returned